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| 外推法天线增益测量的阻抗失配修正及其不确定度评定 | |
| 引用本文： | 陈军,宋振飞,万发雨,谢鸣.外推法天线增益测量的阻抗失配修正及其不确定度评定[J].计量学报,2018,39(1):104-108. |
| 作者姓名： | 陈军 宋振飞 万发雨 谢鸣 |
| 作者单位： | 1.南京信息工程大学, 江苏 南京 210044 2.中国计量科学研究院, 北京 100029 |
| 基金项目： | 国家科技支撑计划(2014BAK02B01);国家自然科学基金(91536110,61601233);江苏省自然科学基金(BK20150918);江苏省高校自然科学研究基金 (14KJB510017);江苏省双创团队人才计划(SRCB201526) |
| 摘 要： | 基于信号流图分析法建立了全端口阻抗失配模型,推导出天线增益的阻抗失配修正公式,结合各端口散射参数实测值可计算出阻抗失配修正值。此外,还提出了一种基于蒙特卡罗法的阻抗失配修正不确定度及其概率分布特性评定方法,为科学、系统地评定外推法增益测量不确定度提供有效方法。 |
| 关 键 词： | 计量学 天线增益 阻抗失配 蒙特卡罗法 外推法 测量不确定度 |
| 收稿时间： | 2016-08-23 |
The Impedance Mismatch Correction for Antenna Gain Extrapolation Measurement and Its Uncertainty Evaluation |
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| CHEN Jun,SONG Zhen-fei,WAN Fa-yu,XIE Ming.The Impedance Mismatch Correction for Antenna Gain Extrapolation Measurement and Its Uncertainty Evaluation[J].Acta Metrologica Sinica,2018,39(1):104-108. | |
| Authors: | CHEN Jun SONG Zhen-fei WAN Fa-yu XIE Ming |
| Affiliation: | 1.Nanjing University of Information Science and Technology, Nanjing, Jiangsu 210044, China 2. National Institute of Metrology, Beijing 100029, China |
| Abstract: | A full-port impedance mismatch model based on signal flow analysis and the corresponding mismatch correction formula for antenna gain is developed, and the impedance mismatch correction value can be obtained by using measured scattering parameters at each port. The impedance mismatch correction uncertainty and its probability distribution evaluation using Monte Carlo method is proposed. This work provides an effective method for scientific and systematic evaluation of extrapolation gain measurement uncertainty. |
| Keywords: | metrology antenna gain impedance mismatch Monte Carlo method extrapolation technique measurement uncertainty |
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